Is it possible to find out coordinates of slits by interference image?

Pader6u

Pader6u

Answered question

2022-08-09

Is it possible to find out coordinates of slits by interference image?

Answer & Explanation

Ashlynn Stephens

Ashlynn Stephens

Beginner2022-08-10Added 25 answers

If the screen is far from the slits, the fringe pattern is the Fourier transform of the slit pattern. If you know the amplitude and phase at each point on the screen you can do a Fourier transform to get the slit pattern. But from just a screen image you don’t have phase information to do that. But you do know that the slit pattern is entirely real-valued, so you can use inverse methods to find a slit pattern which would produce the observed screen image. These methods work by making a guess of the slit pattern, calculating the screen image, then gradually making changes to the slit pattern until the calculated screen image matches the observed image.

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